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ENGINE  DUAL ENGINE FAILURE
Engine Fluctuations without FADEC 1/2 Light

TM-1-1520-240-CL Army CH-47D Heilcopter (EIC:RCD) Manual
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TM 1-1520-240-CL E-2 712   Normal Engine Beep Trim System Failure (High Side) or N2 Governor Failure 1.  Thrust   control   —   Adjust   as   required   to maintain RRPM within limits. 2.  ENG COND lever (affected engine) — Adjust to  a  position  between  FLT  and  GND  that  will control RRPM. 3.  ENGINE  BEEP  TRIM  switch  NO.1  &  2  — Adjust as required. 4.  Land as soon as practicable. 712   Normal Engine Beep Trim System Failure (Low Side or Static) 1.  EMERG ENG TRIM switch (affected engine) — Adjust as required. 2.  EMERG  ENG  TRIM  AUTO/MANUAL  switch (affected engine) — MANUAL. 3.  EMERG ENG TRIM switch (affected engine) —  Adjust  in  coordination  with  the  ENGINE BEEP   TRIM   NO.   1   &   2   switch   to   normal operating RRPM and match torque. 714A  FADEC FAILURES 714A  FADEC 1 or FADEC 2 Caution 1.  FADEC    INC-DEC    beep    switch    (affected engine) — Adjust as required. 2.  Reduce rate of Thrust CONT lever change. 714A  FADEC 1 and FADEC 2 Cautions 1.  FADEC  ENG  1  and  ENG  2  INC-DEC  beep switches — Beep to 100 percent.  Match TQs. 2.  Reduce rate of Thrust CONT lever change. 3.  Land as soon as practicable.







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